Method and apparatus for applying bands to cylinders



Dec. 7, 1954 w. D. PETERS 2,696,130

METHOD AND APPARATUS FOR APPLYING BANDS TO CYLINDERS Filed Jan. 29, 1952 4 Sheets-Sheet l INVENTOR. WILLIAM 0. PE TERS BY @044 gym Dec. 7, 1954 w, PETERS 2,696,130

METHOD AND APPARATUS FOR APPLYING BANDS TO CYLINDERS Filed Jan. 29, 1952 4'Sheets-Sheet 2 ID ID 9' m m 10 i INVENTOR. x WILL/AM 0. PETERS BY :3 ZZQMMgMW Dec. 7, 1954 w. D. PETERS 2,696,130

METHOD AND APPARATUS FOR APPLYING BANDS TO CYLINDERS Filed Jan. 29, 1952 4 Sheets-Sheet 3 INVENTOR. WILL/AM D. PETERS Dec. 7, 1954 METHOD AND APPARATus FOR APPLYING BANDS TO CYLINDERS Filed Jan. 29, 1952 W. D. PETERS 4 Sheets-Sheet 4 flQ- I V 3? t A? 0 BIL so H I I w L1 2 & f INVENTOR. LTJ W/LL/AM D. PETERS I 65 f 6 BY m fwWXMW United States PatentfO omens- -William 1D. ;-Peters, Worthington, -10hi0, .assignor: to .ilfhe Denison/EngineeringCompany, :Columhns, .iQhio, encorporatiomof/fihio ,ApplicationlIanuary29,'1952,"SerialiNo.,268,833

12 filaims. "vs-15 inyent-iomrelates generally to metal won-hing;:mone pamicularmjlhe invention-irelates to the attaohmentrofcn metal band to a cylindrical metal body without thezuse ofziastening devices, one example-mf -then'uven'tion :being .jtheapplication of a'band-to [the hodybfwa. projectile. 7 An object-.ofrthis .inventionzis =10, provide. .a'zmethodzand apparatus .for quickly .and egrpeditiouslymapplying :hands .IorshelLcasirrgsorzother cylindrical bodies.

:Anotherohjectnfthe inventionoisto provide armeth- .,od...and.-apparatus .ztor 1contracting-oncompressing fringinto; ,grooves .in cylindrical bodies by. passing .a contracting .instrument'or .die over-the. bands while; they .iare.-.supportedrin-:regi-stration with. the ,grooves. iAiurthemobjeotlof-tthe invent-ionristto provideatooling ior carryingioutaxhe .methodeouflinedsabo e, :theetnoling dieing. so .:constructed and operated otha't ranminimnmmf wearaor breakage willsoccunthus increasing theeflieiency ofi ithe mechanism and .the operators. .,.A=still -i=lurther object ofitherinuention-zisdo rpro'yide band :applyin-grtooling.zhavdng; means fior supporting :the .shelhorother bodyogainsfllongitudinal monomenhzother @means 2 for supporting ya 1 hand in registration with uthe groove; in the :body, and also, ragainst':longitu.'dtinal movement-a and aa; die with ,e taperedropening-ificrr montracting the band intothe groove in the body, the relation gof'the tbnnd supporting means-and- ,theidie beingzsuchichat after Abe-die has compressed .thelhand ta; ;part' :of the: distance iintonhe; groove'itwill engage @the zhandrsupportingmeans move .it.a.way.-from=the band, thesdiepeompletingrthe Xband ,compressing or contracting: roperation :BSSjiI'XHIDXflS band support :thus .preventingeither :of; 13116 ZPiGCES'JOf gjflIQiOOlillg from-injuring the-other.

:AnotheLobject-af lthB.:inYlifiOILiiS ttonproyide tooling qomapplyingmands do. cylindrieal bodies, .thertoolingkhav- .nngznecollnralikeasupportdor \t he :bandszandnardie \with .a tapered opening for compressingothehands i-ntogrooyes 211111 e drawings:

. 'aFig. l ..3 S-.L8. Efl'0m: elevationaln fview :of mechanism -forapplyingabands tozcylindricalrbodies formed :in accordance Lthe :present invention.

' Fig. 2zjsxaside 'elevat ional wiew of 'the mechanism -nhown Big. :1.

FigsXl-M andifi'aarezdetail longitudinal seetiona1= views an '1'enlar-ged sca1e =taken= through a portiomof the f'mechanismeshowingparts"thereof in difierent-stages *of .wperation.

'efiigs o is also ailongitudinal sectional yiewe'showing the nnechanism :a'fter the last stage of =operation *has been completed. @Figifi'z iswdiagrammatic view or the hydraulic system f' Dis 1a diagrammatic'yiew df'-the-'%Electric circuit ed with the main ramof the'press'mechanismishown L I 1 2,696,130 -".Piatentecl .Dec. .7, 1.954

.2 tier. therrrnotorsnlsedzto: -opera$e;;the 'zhydranlic pumps I in :athe-systemsashownini'Figs. land-i8.

.Referring; iIIlOI'fi particularly .ito. the wdra-twin-g-s, .the 1111-1- .meral 20. designates .a. press which-rmayebe employed :to many out .:the rmethod. and operate :the lbanding imecha- 'znism'xufi rhea-invention. thlS instance, a- ;hydranlic press has been selected for purposes of illustration only and sis; should-beobviouslthat otherwtypesmf. presses :may be -,adapted.;to thenperation as well. IEhe:=press.2.0 includes :annodified .zcrframe 21 having 121 forwardly iprojectin 'g ."basegportion .22 .and :a,;similar-ly projecting headv section .23,, :thesesecfiions beingv spaced. by :a back .section .24.

; The ibase, :bflCk and I head. isect-ions .housea reservoir -25,;a .;motor.26,, .-a.,pump.2.7,.:a reliefvalve 28, -21 LCQHMFQI 129., :a power cylinder 60 .and conduits a whicheonneet these elements.andwcomplete. .a: hydraulicflsystem -51 has been diagrammatically.lillustratedzinzi ig. "7. This lhyltlral-llie system. .is employed .;in .the .roperation .of .g 32 whiohefiectsthebandingtof thercylindrical 1 e res.

.El-Zhe iback sectionnis, provided with a reanwardly pro- ;jecting -.shel f.like portion 33 vfor supporting -.a :motor .54 :used .to operate -a thydraulic pump .35, .see Fig; .8, to gen- :erate' hydraulic pressure .to'.'operate ;a...-second ,power cylinder .36 disposedina recess. provided .in the. forwardly projecting ,portion of the, base. section of the press. The second power cylinder .36 .is equipped with :a secondary ram 317 tusedto yieldably hold lthe-bands, tor the cylindri- .-cal :bodies, in the handing position.

(The dnventionjis primarily directed .toapparatus in the -iormtofdtooling actuatedhby the ,press .2010 apply bands to grooved. cy1indrical..'bodies,, this tooling or-lotherw ise .desig-natedapparatus being indicated generally iby..-.the numeral .38. The .toolingBS dnc'ludes-a seat member .39 which is mounted .onaplatedt) carried "by. .the base secv.tion22. .The seat member .39 ;is .disposed .in axial alignment with "the .rams132 and l-37land 'is providedx-for the reception -and vsupport of a, cylindrical body 41 which .in this instance .hasbeen illustrated as the v.case of .a .projecit'ile. "The lower end of "this case'jis .taperedas .atAZ, ifhe seat .member39 fbe'ing formed for'the accommodatiomoff the member 41. "If the lower end of .the :mertiber 41 should .be otherwise shaped the seat would also he modified ,to conform thereto.

The. plate '40 is provide,d with a plurality of openings *in 'Which%bearing sleeves 43 are disposed, these sleeves serving as guidesfor pins 44 which extend upwardly "from a crosshead 45., this .cros'shead being secured "as .at "4610 Ithe'upper end of ran137. The npperendsofthe pins-.44 are securedto a ring member 47 :on which a fband50 inwegistration with an 'annulargroove sl' formed innhe body 41 disposed in'the'sea't '39. The band'lis supported this positionso that it may be compressed andi 'forcedinto the groove "51 so that it become --fi1=rrily united with theorem-her 41. it '-is an object of the inventron 'to foroe 'theiband into such fir-mengagement wraith ithe Ibody that the-band will be immovable relative to the body.

To tforoe-uthebandinto the groove a compressing 'die,

.indicatedzgenerally' bythemumeral-SZ, hasbeenprouided; uthisucompressingl die. is.carrlied by .a shoe-E53 which is amounted zzfior: sliding movement. on upwardly d-irected guides ;.54 :carried shy; and. secured: to. :the rplate 40. The

rshoeir53iisxseenned'to lthe lowereendsrofrodsxSS :the upperwends of which are secured. tto a .crossheadiSfiwhich -is-inturn fined-to thelowerzend tof ram.32. awhen ram.32 is. neeiprocated i thend-ie .52 'will .be ,zmoved 'ttoward rand away .frornlthe band support-48 and the seatfi).

JIFhe'dieSZ .is-dormed with artaperedwopening 57 which 'islin ax'ia'l registration with .the seat .39 and band support 4,8.-.and consequently the shell .body 41. .As .the die moves infa downwarddirection when ashellbody .and band are -disposed jimthe .seat and .on the support 48,. respectively, .1t'he.tapered ..sides offthe.-.op ening;57 will engage. the band compress the .samei'from all sides. toward .the center cansingthe band'to enter'the groove 5.1. 'TIlEhe .band support 48 has its exterior wall -taperedsim'ibr'lyto the band 50. support 48 will move with the die. -tioned, the lower power cylinder tends to resist move- -ment of the band support 48. This resistance is suptaper of the opening 57. It will be obvious that in orderto cause the band to compress,and be reduced in diameter it will be necessary to resist longitudinal movement of the band in the direction in which the die 52 is moved. The band support is, therefore, carried by the ram 37, of the lower power cylinder 36 and fluid under pressure is supplied to the lower end of this power cylinder to resist movement of the ram. It will be noted from Figs. 3 to 6, inclusive, that the upper end of the opening in the die 52 is only slightly greater in diameter than the exterior of the body 41.

If the die 52 is permitted to move downwardly far enough relative to the support 48, the latter may be engaged and damaged by the die or in turn cause damage to the die. It is, therefore, a feature of the invention to cause the support 48 to move in unison with the die after the band 50 has been partially compressed into the groove 51. To facilitate this operation, the support 48 is provided with a shoulder 58 which will be engaged by the die 52 after the latter has moved a distance sufficient to partially compress the band 50 into the groove 51, this distance being insufficient to permit the sides of the die at the opening 57 to engage the exterior of the support 48. After the die 52 engages the shoulder 58, the band support 48 will be moved by the die away from the band 50. The band will be prevented from movement longitudinally, however, through engagement of the band with the shoulder at the lower side of the groove 51. the continued compression of the band 50 into the groove 51 until the band is finally compressed by the smallest diameter of the die opening 57. The'die is moved relative to the body 41 until it passes completely beyond the After the die has engaged the shoulder 58 the As has been menplied by fluid trapped in the lower end of the power cylinder 36. As shown in the diagrammatic view in Fig. 8, cylinder 36 receives fluid from pump 35 through a line in which a check valve 59 is positioned. This check valve prevents reverse flow of fluid so that when the die 52 engages the band 50 the latter will be prevented from 'moving and imparting motion to the support 48 and ram 37. By resisting longitudinal movement of the band,

while the die 52 is moving,the band will be caused to contract and move into the groove 51. After the die has engaged shoulder 58, however, the support 48 must move with the die. This movement is made possible by disposing a relief valve 60 in a line connecting the ends of cylinder 36. This relief valve 60 will be set to resist fluid flow from the lower to the upper end of the cylinder until the pressure on the fluid is in excess of that necessary to resist longitudinal movement of the band by the die. When the die imparts force directly to the ram 37 through the shoulder 58, however, the valve 60 will permit fluid flow and ram 37 and support 48 will move downwardly at the same rate as the ram 32. As previously pointed out, the initial movement of the die 52 downwardly around the band forces the band partially into the groove 51, then, when the die moves the support 48 away from the band, the bottom wall of the groove will support the hand against longitudinal movement and the continued movement of the die will complete the compression of the band into the groove.

After the die has moved beyond the band the flow of fluid to the power cylinder will be reversed causing the die to be retracted. Due to the inherent resiliency of the material of the band the latter will expand slightly after the die has passed beyond it permitting the lower edge of the band to engage the top surface of the die and be elevated together with the body 41 from the seat 39 as the die is retracted. The fluid pressure being supplied I to the power cylinder 36 by the pump will cause the band support 48 to move or be returned to its operative position as the die 52 is retracted. The parts of the -mechanism will then be in position for the next succeeding operation. The first step in the operation is the placing of a band on the support 48; this operation may be performed manually or by any other suitable means.

The next step consists in inserting the body 41 through the opening in the die, through the band 50 and support f48and into the seat 39. It will be obvious from the foregoing that the seat 39 Continued movement of the die will cause "as a is rigidly secured to the forwardly projecting base portion of the press and is immovable.

Due to the mounting of the band support on the ram of the power cylinder 36 the band support is yieldably held against longitudinal movement until the shoulder on the band support is engaged by the die during its movement to compress the band.

Fig. 5 shows the mechanism immediately after the die has engaged the shoulder on the band support and partially withdrawn the support from the band. It will be noted from this figure that the band has been partially compressed into the groove 51 so that the lower edge of the band is in engagement with the lower edge of the groove 51. This engagement prevents the band from moving longitudinally as the die is moved, consequently, the compression of the band into the groove will continue as the die moves.' By this method the life of the banding tools or mechanism will be lengthened and the banding operation expedited. It will be obvious that the mechanism may be modified in many Ways without affecting the method.

To avoid possible jamming and injury to the tooling, the electrical circuits for the motors 26 and 34 are arranged so that the motor 34 for the cylinder 36 is started before the other motor. The electrical circuits are shown in Fig. 9. It will be seen from this figure that the closing of manual switch 61 will complete the circuit for relay 62 which operates a switch 63 to energize motor 34. Relay 62 also operates a switch 64 which partially controls a circuit for a second relay 65, the latter in turn controlling a switch 66 for the motor 26. A second manual switch 67 cooperates with switch 64 to control the second relay 65. After switches 61 and 67 are momentarily closed, the relays will maintain the circuits closed until normally closed switches 68 are operated to break the circuits. After the circuits are broken it will be necessary to first close switch 61 before the circuit for motor 26 can be completed by closing switch 67.

While the form of embodiment of the present invention as herein disclosed constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

I claim:

1. Apparatus for applying bands to grooved cylindrical bodies comprising a stationary support for a body; a second movable support for a band; a die having a conical opening guided for movement around the body and band to contract the latter into-a groove in the body; power operated means for yieldably holding the second support against movement; and a second power operated means for moving said die to effect the'contraction of the band, said second power operated means serving to move said second support away from the band after said die has partially contracted said band.

2. Apparatus for applying bands to grooved cylindrical bodies comprising a stationary support for one of said bodies; a second support surrounding the first and holding a band in registration with a groove in a body held by the first support; a die having a conical opening guided for movement toward andaway from said supports; power operated means tending to resist movement of said second support; and a second power operated means for moving said die to contractsaid band into the groove in the cylindrical body, said second power operated means serving to move said second support away from the band .after said die has initiated the contraction of said band into the groove in said body.

3. Apparatus for applying bands to' grooved cylindrical bodies comprising a stationary support for one of said bodies; a second support for holding a band in registration with a groove in a body held by the first support; said second support being movable relative to said first support; and a die with a conical opening guided for movement toward and away from said supports, said die engaging said second support to transmit movement thereto following the initial contraction of the band into the groove in the body.

4. Apparatus for applying bands to grooved cylindrical bodies comprislng a stationary support for one of said bodies; a second support having a band-receiving portion and a shoulder, said band-receiving portion holding a band in registration with a groove in a body held by the first support; said second support beingmovable relative to said first support; and a die with a conical opening guided for movement towardand away from said supports, said die being movable to a position surrounding the band-receiving portion of said second support and engaging said shoulder prior to the complete contraction of the band into the groove.

5. Apparatus for applying bands to grooved cylindrical bodies comprising a stationary support for one of said bodies; a sleeve-like supporting member having an external shoulder said sleeve-like member being disposed in movable telescoping relationship with said stationary support; and a die with a tapered opening disposed for telescoping relationship with said sleeve-like member, said die engaging said external shoulder after predetermined telescoping movement relative to said sleeve-like member.

6. The method of applying a band to a cylindrical body with a groove comprising the steps of supporting the body against longitudinal movement; supporting a band around the body in registration with the groove with a yieldable force of sutlicient intensity to resist longitudinal movement; initially partially compressing the band into the groove in the body and then simultaneously overpowering the yieldable force and completely compressing the band into the groove.

7. The method of applying a band to a cylindrical body with a groove comprising the steps of supporting the body against longitudinal movement; supporting a band around the body in registration with the groove against longitudinal movement; initially partially compressing the band into the groove in the body; discontinuing the support of the band after it has been partially compressed into the groove; and then completely compressing the band into the groove.

8. The method of applying a band to a cylindrical body with a groove comprising the steps of supporting the body against longitudinal movement; supporting a band around the body in registration with the groove and against longitudinal movement; compressing the band to cause it to partially enter the groove; interrupting the support of the band; and completely contracting the band into the groove.

9. Apparatus for applying bands to grooved cylindrical bodies comprising a stationary support for one of said bodies; a second support having a band-receiving portion and a shoulder; a fluid pressure operated ram holding said second support in position to dispose a band thereon in registration with a groove in a body held by said stationary support; a band compressing die guided for movement toward and away from said supports; and a second fluid pressure operated ram carrying said die and moving the same to engage and compress said band into the groove in said body, said second ram moving said second support away from said band in opposition to the force of said first-mentioned ram after said band is partially compressed into said groove.

10. Apparatus for applying bands to grooved cylindrical bodies comprising a stationary support for one of said bodies; a second support having a band-receiving portion and a shoulder; a fluid pressure operated ram holding said second support in position to dispose a band thereon in registration with a groove in a body held by said stationary support; a band compressing die guided for movement toward and away from said supports; and a second fluid pressure operated ram having a force of predetermined value in excess of said first mentioned ram, said second ram carrying said die and moving the same to engage and compress said band into the groove in said body, said second ram moving said second support away from said band in opposition to the force of said firstmentioned ram after said band is partially compressed into said groove.

11. Apparatus for applying bands to grooved cylindrical bodies comprising a pair of opposed rams of different capacities; a band diameter reducing die carried by the ram with the greater capacity; a band support carried by the other ram; and a stationary support for holding a grooved body in a position within a band on said band support With the band in registration with a groove in the body, advancement of the ram of greater capacity causing the die to initially press the band into the groove then cause the retraction of the other ram and band support and complete the pressing of the band into the groove.

12. The method of applying a band to a cylindrical body with a groove comprising the steps of supporting the body against longitudinal movement; supporting against longitudinal movement an endless band around the body in registration with the groove; initially reducing the diameter of the band to cause it to partially enter the groove; and simultaneously interrupting the support of the band and continuing the reduction of the diameter thereof.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,034,726 Mueller et a1 Aug. 6, 1912 2,406,392 Minarik et al Aug. 27, 1947 FOREIGN PATENTS Number Country Date 493,128 France Apr. 19, 1919 

